At the lower left, the red WizNet board with its ethernet jack is hotglued in place. The bunch of wires above that feed out the front to the Chronodot. The five buttons are all joined up by resistors and a ground line. The large red board started life as a Sparkfun frequency counter kit. And the mess of wires to the right are from the two toggle switches; one is Heat-Off-Cool and the other is Fan Auto – Fan On.